Richardi jenkins



R. JENKINS.

Lam p.

Patented Jan. 25, 1859.

//v VIA 70R vv PETER5. mwum hm. Washington, 0 r;

entrain salaries rarnwr lambs.

RICHARD JENKINS, OF COVINGTON, KENTUCKY.

LAMP.

Specification of Letters Patent No. 22,729, dated January 25, 1859.

To all whom it may concern:

Be it known that T, RICHARD JENKINS, of Covington, in the county of Kenton and State of Kentucky, have invented a new and useful Improvement in Lamps for Burning Coal-Oi1; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, .in which Figure 1, is an outside view of a lamp with my improvement applied to it. Fig. 2, is a top view of the same, and Fig. 3, is a vertical central sect-ion.

Similar letters of reference, in each of the several figures indicate corresponding parts.

The nature of my invention consists in the employment of an inner and outer cone or semi-sphere in such relation to each other that a space shall exist between them at all parts of their surface, said cones being arranged over the lamp tube so that the inner one is some distance above the same, and being furnished with flame passages, and passages for the introduction of oxygen to the wick tube and to the space existing between the cones or semi-spheres. By thus using two cones, the heavy gases or partially ignited matter rising from coal oil by capillary attraction is confined within a chamber, formed by the two cones a sufficient length of time to allow of a thorough mixing of oxygen therewith so as to insure perfect combustion before said gases rise above the top of the outer cone and give the flame a dull blue appearance at its base. It is not so much the mixing of oxygen or having it impinge upon the heavy or partially volatilized gases at the base of the flame that I consider important, but it is the confining of said gases so that perfect combustion will take place before they escape through the upper cone, and thus a perfectly clear fiame without any appearance of blue at its base is produced and a complete combustion of the gases of coal oil effected.

To enable others, skilled in the art, to make and use my invent-ion, I will proceed to describe its construction and operation.

A, represents the lamp; B, the Wick tube. It is made in two parts, so as to be extended in length and thus serve as a conductor of heat down to the bottom of the lamp where the heavy particles of the oil rest. The wick of this tube rises and falls by means of a cog pinion C.

D, is the lamp cap. lamp, as usual.

E, E, are air-chambers of the cap. Air passes into these chambers as indicated by the arrows 1, 1, and circulates about the upper end of the wick tube and thus supports combustion.

F, F, are two cones or semi-spheres of the cap. The cone I is smaller than that F and is surrounded by cone F, so that a space G, exists between them at all parts of their surface. In the tops of the cones, oblong slits or flame passages a, a, are provided. The upper passage or slit is made longer than the width of the wick tube, because the flame, in striking the under curved surface of the upper cone is spread so that it perfectly fills the slit or passage. In the sides of the cap, cold air passages Z), a, are formed so that the atmosphere shall circulate in the space G, existing between the two cones and thus insure a perfect combustion of the heavier gases before the flame is produced above the upper cone. Air is also admitted above the top of the upper cone by passages c, c, as shown and thus the gases are very perfectly ignited.

- I am aware that lamp caps have been so constructed that currents of air are kept circulating about and through the base of the flame, therefore I do not claim this arrangement, but

lVhat I do claim as my invention and desire to secure by Letters Patent, is

The combination of the inner and outer cones, when arranged in relation to the wick tube and each other, substantially as specified and supplied with air or oxygen for the purpose of maintaining a perfect combustion of the heavier gases or matter rising by capillary attraction in the space or chamber existing between the cones and thus producing with coal oil, a brilliantfiame with very little, if any, blue appearance at its base, above the outer cone, substantially as set forth.

The above specification of my improvement in burning coal oil signed by me this ninth day of December 1858.

RICHARD JENKINS. lVitnesses G. YORKE Ar LEE, ANDREW WIIITELEY.

It is screwed on the 

